Metal-bending machine.



No. 643,353. Patented Feb. I3, |900.

M. w. HEmUs & J. HERRULD. METAL'BENDING MACHINE.

(Application i'lled Apr. 10, 1899A (N0 Model.) 2-Sheets-S he l.

as 5 I? gg.

Z fj' '3 if 1N: Nowms PETERS co., PnoTv-Lxno.. wAsHmGwN. u. c.

Ne. 643,353. Patented Feb. ls, |900.

- M. w.. HENlus se J. HERRoLn.

METAL BENDING MACHINE.

(Application filed Apr. 10, 1899.) (No Model.) 2 Sheets-Sheet 2.

ll'NiTED STATES PATENT OEEICE.

MAX W. I-IENIUS AND JOI-IN HERROLD, OF NEW YORK, N. Y.; SAD HERROLDASSIGNOR TO SAID HENIUS.

METAL-BENDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 643,353, dated February13, 1900.

Application iiled April l0, 1899.

T0 cir/ZZ whom it may concern.:

Be it known that We, MAX W. HENIUS and JOHN HEEROLD, citizens of theUnited States, and residents of New York, in the county of Kings andState of New York, have invented a new and useful Improvement inMetal-Bending Machines, of which the following is a speciication.

- Our invention relates to an improvement in metal-bending machines; andit consists more particularly in a new machine for bending strips ofsheet metal-such, for instance, as corset-steels.

, The objects of our invention are to provide a machine of the abovecharacter in which the corset-steels will be very rapidly bent, in whichthe bending of each steel may be started at any desired point, and inwhich any desired bend may be imparted tothe steel.

A further object is to provide means for timing the .admission of thesteels into the machine, so that one steel will not be permitted tooverlap the next preceding steel.

A practical embodiment of our invention is represented in theaccompanying drawings, in which- Figure l is a View in side elevation ofthe machine. Fig. 2 is a top plan view of the same. Fig. 3 is a verticalsection from front to rear-through the machine. Fig. 4 is a top planview of the machine with the hopper for feeding the steels into themachine removed. Fig. 5 is a front view of the machine. Fig. G is a rearview of the same. Fig. '7 is a plan view with the top of the frameremoved. Fig. 8 is a vertical section from front to rear through theupper portion of the machine, the parts being in the position which theyassume when forming a bend in the steel; and Fig. 9 represents partialfront and side views of one of the steels after it has been bent.

The framework of the machine comprises a base A, side frames a ct',rigidly spaced apart by cross-bars a2, and a top a3. The top CL3 has asteel-receiving slot or opening d4 therethrough.

A pair of bending-rolls B and C are carried by shafts b and c, mountedto rotate in suitable bearings in the side frames a a', the bearings forthe frontroll shaft b being sta- Y Serial No.'712,373. (No modelationary and the bearings for the rearroll shaft c having a limitedsliding movement toward and away from the front of the machine. Theserolls B and C are located near the top of the machine beneath thesteel-receiving opening` c4.

An auxiliary frame is hinged within the casing on the shaft c, whichframe comprises a pair of side plates D D' and a cross-bar d, connectingtheir lower ends. A bending-roll E is carried by a rotary shaft e,mounted in stationary bearings in the Sideplates D D' of the auxiliaryframe, the said shaft being located a short distance below the shaft cof the rear roll.

A rotary cam-shaft F is mounted in adjustable bearings in the sideframes a at', ea'ch of the said bearings of the shaft F being capable ofadjustment by means of a pair of adjust ing-screws ff', leading from thefront of the machine into engagement with one side of the bearing andfrom the back of the machine into engagement with the other side of thebearing. The shaft F is provided on one end exterior to the side framewith a drive-pulley f2, by means of which the shaft may be driven from asource of power. (Not shown.)

The rotary movement of the shaft F is imparted to the front-roll shaft bby a gearwheel f3 on the shaft F between the drive-v pulley f2 and theside frame a, intermediate gear-wheels G G', mounted on stub-axles g g,and a gear-wheel b', carried by the end of the said shaft b. Rotarymovement is imparted from the front-roll shaft b to the rear-roll shaftc, whether the rolls are closer to or farther from each other, by agear-wheel b2 on the shaft b and a gear-wheel c on the shaft c, both ofwhich gears are provided with extra long teeth, so as to permit aconsiderable movement toward and away from each other without beingdisconnected. Rotary movement is imparted to the lower roll-shaft e bymeans of a gear-wheel c' on the shaft e in a dierent plane from thegear-wheels c' and an intermediate wide gear-wheel H, carried by a shafth, mounted in the side plates D D' of the auxiliary swinging frame.

A swinging movement is imparted to the auxiliary frame by a pair of camsf4f5, car- IOO frame to a bracket d2, carried by one of the cross-barsa2.

The pivot-shaft c ofthe swinging frame is caused to slide toward andaway from the front of the machine at predetermined intervals during theswinging movement of the auxiliary frame to alternately permit the rollsB and C to engage the rear portion of one steel to bend it and to permitthe advance portieri of the next succeeding steel to pass freely betweenthe said rolls. This movement is accomplished by providing stop-pins Il', projecting inwardly from the side frames d d' in position to engagethe front edges of the side plates D D/ at the top of the swingingframe, and a cross-bar l2, mounted in sliding bearings in the sideframes c a', which cross-bar is caused to engage the rear edges of theside plates D D. This cross-bar is adjusted by screws extending from theback of the side frames into engagement with the sliding bearings of thesaid cross-bar.

By adjusting the bar l2 the greatest distance between the rolls B and Cmay be regulated to suit steels of different thicknesses, and byadjusting the bearings of the shaft F the amount of bend to be impartedto the steels may also be regulated.

A funnel-shaped hopper J is mounted on the top aB of the machine, thedischarge-opening of the said hopperbeing arranged in line with thesteel-receiving opening ctin the top of the casing. A gate K is fittedto slide between the discharge-opening in the hopper J and the openingc4, which gate is provided with an openingr, arranged to opencommunication between the mouth of the hopper J and the opening d4 whenthe gate is slid forwardly and to close communication between the hopperand the opening a4 when the gate is slid rearwardly. This gate isoperated by a rocking lever L, having one arm engaged with the gate andits other arm engaged by a cam f6, carried by the shaft F. The rockinglever L is held in engagement with the cam f6 by a retracting-spring Z,leading from the lower arm of the lever to one of the crossbars a2 ofthe frame.

An adjustable stop is located at the front of the machine a considerabledistance below the bending-rolls. This stop comprises atable M,havin gdownwardly-exten ded b ranches m m, which are secured to the side framesct a by bolts m3, which pass through elongated slots m2 in the saidears. This stop may be adj usted toward and away from the bendingrolls,so as to determine the point on the steel which is inserted within themachine at which the bend shall be started.

An adjustable discharge-plate N is carried by the auxiliary swingingframe, which plate is provided with ears n n', havingverticallyelongated slots n2, through which pass clamping-bolts n3 forclamping the discharge-plate in any desired vertical adjustment;discharge-plate N is fitted to engage the advance or lower end of thesteel asthe frame is swung forwardly and positively swing the said steeloutwardly away from the machine as it is being bent, thus preventing anytendency on the part of the steel to stick in its first position withinthe machine.

In operation the steel to be bent is dropped into the hopper J. The gateK will be slid to the limit of itslforward movement and the rolls B andC at the same time moved a distance apart sufficient to permit the steelto fall freely until its lower end rests upon the stop M. The auxiliaryframe is then swung forward. This movement will bring the two rolls Band O into contact with the opposite faces of the steel and will bringthe roll E into engagement with the inner face of the steel and bend itpartially around the roll B, the discharge-plate N at the same timepositively freeing the lower end of the steel from the adjustable stopM. Before the steel is entirely withdrawn by the rolls B and C from thehopper J the cam f6 will have released the lever L, and the spring lwill cause the lever to pull the gate K rearwardly against j theouterface of the steel, so that the moment that the rear end or top of thesteel leaves the opening in the gate the gate will close and will notpermit t-he next succeeding steel to be fed into the machine until theproper time.

The machine as above described is capable of forming bends in metalstrips in a very rapid and efficient manner and at the same time iscapable of forming the bend at any desired portion in the strip andmaking'the bend greater or less, as may be desired.

The term corset-steel which we have herein used is intended to covercorset-stiffenings of any metal, and itis also to be understood that the#machine can be advantageously employed for bending metallic strips for.other purposes, if so desired.

By forming the hopper J funnel-shaped the steel may be freely droppedinto the hopper and Will not be confined closely therein eX- cept at thedischarge end of the same.

It is evident that slight changes might be resorted to in the form andarrangement of the several parts Without departing from the spirit andscope of this invention. Hence we do not wish to limit ourselvesstrictly to the structure herein set forth; but

that we claim isl. In a machine 'for bending corset-steels,bending-rolls, an adjustable stop, means for feeding the steel betweenthe rolls into engagement With the stopand means for operating the rollsto form a bend in the steel, substantially as set forth.

2. In a machine for bending corset-steels, a pair of bending-rolls, aswinging frame hinged on one of the bending-roll shafts, a thirdbending-roll mounted in said frame, means for feeding the steels betweenthe bending-rolls This l IOO IIO

IZO

and means for swinging the frame for forming bends in the steels,substantially as set forth. i

3. In amachine for bending corset-steels, `a pair of bending-rolls, aswinging frame hinged on the shaft of one of the bending-rolls, a

. third bending-roll mounted in the said swinging frame, means forfeeding the steels between the bending-rolls and a rotary cam arrangedto swing the frame to form bends in the steels, substantially as setforth.

4. In a machine for bending corset-steels, bending-rolls, a stop carriedbythe machine, means for feeding the steels between the rolls intoengagement with the stop, aswinging frame, means for operating it forforming bends inthe steels and a discharge-plate carried by the swingingframe in position to engage the advance ends of the steels adjacent tothe stop for swinging them outwardly away from the machine,substantially asset forth.

5. In a machine for bending corset-steels, a pair of bending-wilmaswinging frame hinged on one of the bending-rollshafts, a thirdbending-roll, mounted in the said frame, a rotary camshaft, a camthereon for operating the frame, a hopper for containing a steel, meansforopening and closing the mou th of the hopper comprising a slidinggate and a rocking` level' having one arm engaged with the gate and theother with'a cam on the camshaft, substantially as set forth.

6. In a machine for bending corset-steels, i

means for feeding steels into the machine, a bending-roll mounted instationary bearings in the frame, a second bending-roll mounted `insliding bearings in the frame, a swinging frame, hinged on the shaft ofthe secondnam'ed bending-roll, athird bending-roll mounted in theframe,a rotary shaft for swinging the frame and means for moving thesecond-named roll toward and away. from the first-nam ed roll atpredetermined intervals for p causing the said rolls to alternatelypermit the free passage of the steel therethrough and to engage the saidsteel, substantially as set forth.

7. In a machine for bending corset-steels, a bending-roll mounted instationary bearings in the frame, a'second bending-roll mounted insliding bearings in the frame, a swinging frame hinged on the shaft ofthe second-named bending-roll, means for swinging the frame and meansfor sliding the second-named roll toward and away from the first-namedroll comprising stops arranged to engage the front and rear of theswinging frame fitted to act in engaging the front of the swingingframe, and i an adjustable stop engaging the rear of the said frame, thesaid stops beingfitted to coact with the means for swinging the frame,substantially as set forth.

9. In a machine for bending corsetsteels,a bending-roll mounted instationary bearings in the frame, a second roll mounted in slid. ingbearings in the frame, a swinging frame hinged on the shaft of thesecond-named bend ing-roll, a third bendingroll mounted in the saidswinging frame, a rotary cam for swing ing the said frame and means foradjusting the said shaft toward and away-from the swinging frame toregulate the amount of bend in the steels, substantially as set forth. j

In testimony that we claim the foregoing as our invention we have signedour'names, in

lpresence of two witnesses, this 28th day of March, 1899.

MAX W. HENIUS. JOHN HERROLD.

Witnesses:

ROBERT B. SEWARD,

FREDK. I'IAYNEs.

